Modern cities are intertwined with strange spaces, and reality and the supernatural coexist.
The story begins on an ordinary university campus, and then moves to the mysterious infinite flow space. The first copy is an abandoned hospital full of weird atmosphere.
This is a world chosen by a mysterious force. Some humans are forced to participate in a death game and survive in horrific replicas.
Infinite flow rules: Participants must complete the tasks issued by the system, otherwise they will die.
Supernatural phenomena: There are various supernatural events and monsters in the copy.
A special bond born from the test of life and death.
Intention: unknown